Helix
12 in. Circle Ruler

This 2-in-1 ruler and compass makes it easy to draw precise circles up to 12 in. in diameter.

The ruler has stencils to draw circles less than 1 in (circles are in 1/16 in. increments). For larger circles, simply place pen or pencil in the appropriate hole (1/8 in. increments), hold the center disk, and sweep the ruler around.

The Circle Ruler has both metric and 1/16 in. graduations. It also features a handle for easy pick-up.